A softswitch, in very simple words, is a device that originates communication from one point to another, usually when there are multiple points to select. A softswitch allows the incorporation of various protocols in Next Generation Networks (NGN). The main task of softswitch is to build network interfaces between media gateways and signaling gateways. In a VoIP network, softswitches are centralized devices, which basically work with the help of a computer. The softswitch concept is related to the idea of ​​completely dividing the switching unit from the main network. Since VoIP networks have been shaped by the combination of telephone and computer networks, the softswitch functions as a hub between these two networks, transmitting various data requests from one network to another at the same time.

The core device called a softswitch is categorized into two parts: Class 4 and Class 5 softswitches. A Class 4 VoIP switch routes large volumes of long distance or international telephone calls. For businesses that want to connect their VoIP servers, a Class 4 switch protects the release of VoIP traffic and services across multiple Internet Protocol networks.

Class 4 switch features can include excellent call routing, eliminating suspension and cost while increasing the quality of VoIP phone calls, and a variety of security components. Many Class 4 softswitches also include a billing interface that allows record keeping of phone call information.

A Class 4 softswitch can even sort information by date, customer name, or other ways to produce reports on outgoing and incoming phone calls, call routing, traffic volume, and even unofficial calls.

In contrast, the Class 5 softswitch works to link phones and other devices together. Class 5 switch is also called Internet Protocol switch. Route phone calls to a precise IP address. It also enables end-user facets like call forwarding, caller ID, call transfer, call waiting, and last but not least, video conferencing.

Class 5 softswitch features:

• Forward on busy

• Reject unauthorized calls

• Resend if no reply

• Caller ID

• Landline dialing

• Selective acceptance and rejection of calls

• Only on the network

• Call groups

• Call back if busy

• Voicemail C5

• Call back

These two softswitches are packed with pioneering features and functions. A softswitch gives the VoIP service provider the flexibility and elasticity to differentiate themselves and succeed in the burgeoning and growing VoIP industry.